Method of controlling a mobile terminal, and an associated mobile terminal

ABSTRACT

A method is disclosed for controlling a mobile terminal having a first wireless interface for cellular communication in a mobile telecommunications network and a second wireless interface for non-cellular wireless communication, such as wireless local area network (WLAN) communication, in at least one frequency band. In the mobile terminal, the following steps are performed. Information is received from the mobile telecommunications network, and the information is processed. Then, based on an outcome of the processing of the information, the second wireless interface is disabled from wireless communication in at least one frequency band.

FIELD OF THE INVENTION

The present invention relates to mobile terminals, and more specificallyto a method of controlling, for a mobile terminal having a firstwireless interface for cellular communication in a mobiletelecommunications network and a second wireless interface fornon-cellular wireless communication in at least one frequency band,disablement of the second wireless interface. The invention also relatesto an associated mobile terminal.

BACKGROUND OF THE INVENTION

Nowadays, mobile terminals such as mobile (cellular) phones, personaldigital assistants (PDAs) or communicators have many different functionsin addition to the conventional one, i.e. to serve as a means for mobiletelecommunication of speech between a user of the mobile terminal andanother user of a remote device. Examples of such additional functionsinclude camera functionality (involving for instance the capturing ofstill images or recording of video), audio functionality (involving forinstance playback of locally stored or remotely downloaded music), andelectronic messaging functionality (such as short message services(SMS), multimedia messaging services (MMS) or email).

As is familiar per se, not all such functionality of mobile terminals issuitable for use everywhere. For instance, use of the terminal'scellular radio interface may be prohibited in hospitals or onboardairplanes. Likewise, camera use may be prohibited in restricted areassuch as military bases, corporate premises or at concerts. Audioplayback may be prohibited in libraries or at cinemas, etc.

WO2005/002263 discloses a method for temporarily preventing a certainfunction of a portable device, such as a mobile terminal. Upon receiptof a blocking key via cable, over a wireless link or in an electronicmessage, a certain function is blocked in the portable device. Thecertain function may for instance be a camera function. Whensubsequently receiving an unblocking key, the certain function may bereactivated in the portable device.

More recently, mobile terminals have been developed and introduced whichnot only have a first wireless interface that permits cellularcommunication of speech, video or data in a mobile telecommunicationsnetwork, but in addition a second wireless interface for communicationwithout the use of said mobile telecommunications network.

The first wireless interface is typically adapted for cellularcommunication in compliance with mobile telecommunication standards suchas GSM, UMTS, D-AMPS, CDMA2000, FOMA or TD-SCDMA performed in one ormore frequency bands such as 900 MHz, 1800 MHz or 1900 MHz.

The second wireless interface may typically involve short-rangesupplementary data communication such as Bluetooth at 2.4 GHz, or GPSservices. Another example is WLAN (Wireless Local Area Network) access,which is sometimes referred to as Wifi. In the year 1997, the Instituteof Electrical and Electronics Engineers (IEEE) ratified the 802.11specification [IEEE Std 802.11 (ISO/IEC 8802-11: 1999)] as a standardfor wireless LANs. IEEE 802.11 enables mobile stations to communicatethrough a wireless network interface directly with each other or withother stations through an access point. An access point is a centralizedgateway providing message and power management and access to an externalLAN and/or the Internet. IEEE 802.11 access products are currentlywidely sold with personal computers, computer peripherals, printservers, and mobile devices such as laptops or mobile terminals likecellular phones, PDAs and communicators. The operating range of awireless local area network may be up to a few hundred meters indistance, thereby making it very useful for mobile network access inoffice buildings, warehouses, hospitals, campuses, train stations,airports and many other public areas.

There are a plurality of different protocols within the IEEE 802.11standards, using different frequency bands and having varying datatransmission speeds for wireless packet data communication. The originalIEEE 802.11 standard supported wireless interfaces operating at speedsof up to 2 megabit per second (Mbps) in the 2.4 GHz radio frequency (RF)or microwave band, or more specifically between 2.4 and 2.497 GHz. Byusing different modulation techniques, IEEE 802.11b raised the datatransmission rates to 11 Mbps, while IEEE 802.11a supports up to 54 Mbpstransmission rates in a 5 GHz band, or more specifically between 5.15and 5.875 GHz. Moreover, IEEE 802.11g is developing standards for datatransmission rates of 54 Mbps in the 2.4 GHz band.

Alternative wireless LAN technologies are HiperLAN2 (operating in the 5GHz (specifically 5.4 to 5.7 GHz) U-NII band), WiMAX (WorldwideInteroperability for Microwave Access, which is an IEEE 802.16 standardand typically operates in a frequency band located somewhere between 2.5and 5.8 GHz), and HomeRF.

The terminologies “wireless local area network”, “wireless LAN” or just“WLAN” are used in the remainder of this document as a general referenceto any available technology for wireless data communication, includingbut not limited to any of the technologies referred to above.

A problem with WLAN is that even if the frequency bands mentioned aboveare normally unlicensed and therefore freely available in mostcountries, they may nevertheless be reserved for licensed use, for e.g.governmental or military purposes, in individual countries, or may evenbe completely forbidden to use in such a country. Therefore,manufacturers of mobile terminals may have to design separate versionsof mobile terminals, where the WLAN module has been removed, for sale insuch countries. Having to design separate versions has apparentdrawbacks in terms of design cost, marketing expenses, and service andrepair.

In US 2005/0153692, a method and a system are presented for a mobileterminal having both a first wireless interface for cellulartelecommunications and a second wireless interface for WLAN access. Inthis system, the mobile telecommunications network transmits a broadcastsignal to the mobile terminal containing information on available(interworking) WLAN(s) in the current cell of the mobiletelecommunications network. If no available WLAN is indicated in theinformation received from the mobile telecommunications network, themobile terminal maintains its WLAN interface in an inactive sleepingmode for powersaving purposes. On the other hand, if the signalindicates presence of a WLAN in the current cell, the mobile terminalactivates its WLAN interface and causes it to scan for WLAN accesspoints (APs) in the neighborhood. To this end, the broadcastedinformation may contain data that facilitates for the mobile terminal toconnect to the WLAN, for instance data regarding type, identity orfrequency channels of the WLAN.

Thus, in the approach of US 2005/0153692, the WLAN interface is normallykept in a sleeping mode, unless information is provided from the mobiletelecommunications network to the effect that there is an available WLANnearby. While this service may have its benefits when it comes topowersaving, it still has some drawbacks.

Firstly, modification of the mobile telecommunications network isrequired, so that it supports this service. Secondly, if the mobileterminal is used in a mobile telecommunications network where thisservice is not available (for instance if the terminal is brought abroadand uses roaming), or if the service is simply interrupted for somereasons in a current cell of a network where it would normally beprovided, the WLAN interface will be kept in its sleeping mode forever,and the mobile terminal may fail to avail itself of opportunities toWLAN access as they may exist.

SUMMARY OF THE INVENTION

One objective of the invention is to improve the problem situationdescribed above for mobile terminals having a first wireless interfacefor cellular communication in a mobile telecommunications network and asecond wireless interface for non-cellular communication.

This objective is obtained, according to a first aspect of theinvention, by a method of controlling a mobile terminal having a firstwireless interface for cellular communication in a mobiletelecommunications network and a second wireless interface fornon-cellular wireless communication in at least one frequency band, themethod involving the steps, in said mobile terminal, of:

receiving information from said mobile telecommunications network;

processing said information; and

disabling, based on an outcome of said processing of said information,said second wireless interface from wireless communication in at leastone frequency band.

Said step of receiving information may involve receiving controlinformation from a node, such as a base station, in said mobiletelecommunications network over said first wireless interface.

Said steps of processing and disabling may be based on a country code,network code or operator code associated with said mobiletelecommunications network and derivable from the control informationreceived from said node.

Alternatively, said step of disabling may be performed if said controlinformation includes a disabling command.

Advantageously, in a case where said at least one frequency banddisabled in said step of disabling is a frequency band which isunlicensed (i.e. allowable) in a first country or geographic area, butis reserved, prohibited or otherwise unavailable (i.e. non-allowable) ina second country or geographic area, said step of disabling may beperformed if the information received in said step of receivingindicates that said mobile telecommunications network is associatedwith, e.g. installed in, said second country or geographic area.

Said step of processing may involve comparison between contents of saidinformation and reference data stored in local memory of said mobileterminal, wherein said step of disabling is performed if the outcome ofsaid processing is a match from said comparison, indicating that saidmobile telecommunications network is associated with said second countryor geographic area.

In one embodiment, said second wireless interface is capable of wirelesscommunication in at least a first and a second frequency band, whereinsaid step of disabling involves disabling the second wireless interfacefrom wireless communication in said first frequency band but not in saidsecond frequency band. Alternatively, said step of disabling may involvedisabling the second wireless interface from wireless communication insaid first frequency band as well as in said second frequency band.

The objective stated above is also obtained, according to a secondaspect of the invention, by a mobile terminal having a first wirelessinterface for cellular communication in a mobile telecommunicationsnetwork, a second wireless interface for non-cellular communication, anda controller coupled to said first and second wireless interfaces,wherein the controller is adapted to:

receive information from said mobile telecommunications network;

process said information; and

disable, based on an outcome of said processing of said information,said second wireless interface from wireless communication in at leastone frequency band.

The second wireless interface may be an interface adapted forconnectionless packet data communication. More particularly, oralternatively, the second wireless interface may be a wireless localarea network interface being compliant with a communication standardselected from the group consisting of: IEEE 802.11, IEEE 802.11a, IEEE802.11b, IEEE 802.11g, HiperLAN2, WiMAX (IEEE 802.16), and HomeRF.

The first wireless interface may be an interface adapted for cellularcommunication in compliance with mobile telecommunication standards suchas GSM, UMTS, D-AMPS, CDMA2000, FOMA or TD-SCDMA. The mobile terminalmay thus be a mobile (cellular) phone, personal digital assistant,communicator, etc.

In one embodiment, where the second wireless interface is capable ofwireless communication in at least a first and a second frequency band,and the mobile terminal further has local memory for storing referencedata,

said reference data defines a mapping between different countries,geographic areas or mobile telecommunications networks, represented byat least one of a country code, network code or operator code, andallowability or non-allowability of different frequency bands fornon-cellular wireless communication;

the controller is adapted to receive said information over said firstwireless interface as control information from a node in said mobiletelecommunications network;

the controller is adapted to process said control information receivedfrom said node by deriving at least one of a country code, network codeor operator code associated with said mobile telecommunications network,and comparing the derived country code, network code or operator code tosaid reference data to produce said outcome of said processing; and

the controller is adapted to disable the second wireless interface fromwireless communication in said first frequency band, said secondfrequency band, none of said first and second frequency bands, or bothof said first and second frequency bands, depending on said outcome ofsaid processing.

The local memory may comprise non-volatile memory in which saidreference data is stored in a manner that prevents manipulation.

In one embodiment, where the mobile terminal further has a userinterface, the controller is adapted to provide an alert in said userinterface, before disabling said second wireless interface. Thecontroller may further be adapted, after having provided said alert insaid user interface, to await a confirmation from a user of the mobileterminal before disabling said second wireless interface.

The controller of the mobile terminal according to the second aspect maybe adapted to perform any of the steps of the method according to thefirst aspect described above, and the mobile terminal according to thesecond aspect may have the same or corresponding features and advantagesas the method according to the first aspect. Correspondingly, the methodaccording to the first aspect may contain steps that perform any of thefunctionality specified above for the mobile terminal according to thesecond aspect.

Simply put, according to these aspects of the invention, in contrast tothe approach described in the background section, the normal situationfor a mobile terminal according to a typical embodiment will be to keepthe WLAN interface enabled and have it disabled once it has beendetected that the mobile telecommunications network that the cellularinterface interacts with is at least either located in a country oroperated by a network operator that does not permit usage of the WLANinterface. The above notwithstanding, the enabled state of the WLANinterface may include different modes, such as powersaving mode, idlemode and active mode (scanning for available WLAN resources).

These aspects of the invention have advantages in terms of security andsimplicity both for operators of mobile telecommunications networks andfor manufacturers or providers of mobile terminals, and also in terms ofsafety and convenience for end users of mobile terminals. For instance,since the mobile terminals preferably make use of control informationsuch as country code, network code or operator code, which is alreadyavailable in existing mobile telecommunications networks, there is noneed for network operators to modify their mobile telecommunicationsnetworks to have them work with the present inventive aspect. Moreover,since the mobile terminals are preferably adapted to control theenablement or disablement of their second wireless interface (WLANinterface) automatically based on the aforesaid control information fromthe mobile telecommunications networks, end user convenience isobtained, and at the same time the manufacturers or providers of mobileterminals do not have to design special models for countries where WLANaccess is not allowed or limited to certain frequency band(s).

As used herein, a “frequency band” is not limited to any particularminimal width and may be as narrow as a single frequency forapplications where the second wireless interface is operable at such asingle frequency.

Other objectives, features, aspects and advantages of the presentinvention may appear from the following detailed description ofexemplifying embodiments, from the appended dependent claims and fromthe drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

Exemplifying embodiments of the present invention will be described inmore detail below with reference to the appended drawings, where

FIG. 1 illustrates an environment, including a cellular mobiletelecommunications network and a wireless LAN, in which a mobileterminal according to the invention may be applied,

FIG. 2 is a schematic block diagram of a mobile terminal according toone embodiment, and

FIG. 3 illustrates a method of controlling a mobile terminal accordingto one embodiment.

DETAILED DESCRIPTION OF THE INVENTION

Aspects of the invention will now be described in accordance withexemplifying embodiments thereof and with reference to FIGS. 1-3.

FIG. 1 illustrates a typical operating scenario for a mobile terminal400 which is shown in more detail in FIG. 2. The mobile terminal 400 hasa first wireless interface 442 and a second wireless interface 444, bothcontrolled by a controller 440 which in addition has associated localmemory 448. The controller 440 may be implemented by any commerciallyavailable CPU (“Central Processing Unit”), DSP (“Digital SignalProcessor”), or any other electronic programmable logic device,including an application-specific integrated circuit (ASIC). Thecontroller 440 may also be responsible for the overall operation of themobile terminal 400. The associated memory 448 may be for instance RAMmemory, ROM memory, EEPROM memory, flash memory, magnetic disk, or anycombination thereof.

A user interface 446 contains typical input/output elements such as anycombination of a display, keypad, joystick, single keys, touchscreen,touchpad, etc, and allows a user 401 to operate the mobile terminal 400.

The first wireless interface 442 is adapted for cellular communicationin compliance with any commercially available mobile telecommunicationstandard such as GSM, UMTS, D-AMPS, CDMA2000, FOMA or TD-SCDMA performedin one or more frequency bands such as 900 MHz, 1800 MHz or 1900 MHz.Thus, the mobile terminal may connect to and perform cellularcommunication with a mobile telecommunications network 410 through awireless link 402 established between the first wireless interface 442and a base station (BTS) 404 included in the mobile telecommunicationsnetwork 410. The base station 404 is connected to a base stationcontroller (BSC) 406 that in turn is operatively connected to variouscentral modules (represented jointly as core network 407 in FIG. 1)which provide central functionality in the network. The particulars ofsuch central modules are well known to a skilled person in the field ofmobile telecommunications, and a detailed description thereof is leftour herein in order not to obscure the invention in unnecessary detail.

By means of the mobile terminal 400 and the mobile telecommunicationsnetwork 410, the user 401 may use various connection-oriented andconnectionless telecommunications services such as voice calls, datacalls, facsimile transmissions, music transmissions, still imagetransmissions, video transmissions, electronic message transmissions(e.g. SMS, MMS, email, instant messaging) and electronic commerce. Theseservices include for instance telephone communication with telephoneterminals 414 in other telecommunication networks, such as a publicswitched telephone network (PSTN) 412, and packet-switched datacommunication with a remote unit 426 via a packet data serving node(PDSN) 408 and an IP backbone 420, which may be the Internet or a partthereof.

The second wireless interface 444 is adapted for non-cellular wirelesscommunication, i.e. wireless communication that does not directlyinvolve the cellular mobile telecommunications network 410. Preferably,the second wireless interface 444 is adapted for connectionless packetdata communication in or with a wireless local area network (WLAN) 430being compliant with any commercially available communication standard,for instance selected from the group consisting of: IEEE 802.11, IEEE802.11a, IEEE 802.11b, IEEE 802.11g, HiperLAN2, WiMAX (IEEE 802.16), andHomeRF.

The second wireless interface 444 may be adapted for operation in one RF(radio frequency) or microwave frequency band, or in any of a number ofsuch frequency bands, potentially partially overlapping each other, forwireless communication 403 via an access point (AP) 432 with remoteresources within the WLAN 430 (e.g. units 436) or accessible through it.For instance, such remote resources may be part of a business oruniversity intranet, or may be mobile Internet resources 426 on the IPbackbone 420, accessed over a router 434.

Whereas the first wireless interface 442 is normally constantly enabledand operative (possibly subject to certain exceptions due to powersavingschedules, flight mode, etc), complete or partial disablement of thesecond wireless interface 444 may be controlled in the manner which isillustrated generally in FIG. 3.

Normally, also the second wireless interface 444 is kept enabled andoperative (possibly subject to certain exceptions due to powersavingschedules, flight mode, etc), thereby allowing the interface 444 to scanfor available APs 432, communicate with resources 436, 426 over the WLAN430 once identified, etc. This is true so long as the mobile terminal400 is present in a country or geographic area where WLAN access isavailable and allowed in all or some of the frequency bands supported bythe second wireless interface 444. The mobile terminal 400 usesinformation which is received, step 460, from the mobiletelecommunications network 410 over the first wireless interface 442 tocontrol whether the second wireless interface 444 is to be enabled ordisabled.

To this end, in one embodiment, the controller 440 uses geographicalinformation about the mobile telecommunications network 410, in the formof the country code (NW_CC 409 a) of the country in which the network410 is installed. Such country codes may preferably follow the list ofassigned country codes in the ITU-T recommendation E.164 (ITU-T=theTelecommunication standard sector of the International TelecommunicationUnion). The country code NC_CC 409 a is either automatically included incontrol information sent from the core network 407 to the mobileterminal 400, for instance at system access, or is otherwise easilyretrievable from the network 410 by the mobile terminal 400.

Thus, in this embodiment, the local memory 448 of the mobile terminal400 has been provided with reference data 449 defining, for each of anumber of ITU-T country codes, whether and/or to what extent wirelessLAN access is allowed. Such reference data 449 may look like:

Country code WLAN allowed  1 Y  46 Y 972 N . . . . . . where “Y” meansYes and “N” means No.

Or, if the second wireless interface 444 supports more than one WLANfrequency band Δf₁, Δf₂, . . . , Δf_(n):

Country code Δf₁ Δf₂ . . . Δf_(n)  1 Y Y . . . Y  46 Y N . . . N 972 N N. . . N . . . . . . . . . . . . . . .

Thus, in the latter example, each row in this mapping or table definesthe allowability and non-allowability, respectively, of WLAN access indifferent frequency bands for different countries, as represented bytheir country codes.

In this example, WLAN access is allowed in the country having countrycode 1 for all frequency bands Δf₁, Δf₂, . . . , Δf_(n), whereas onlyfrequency band Δf₁ is allowed in the country having country code 46, andWLAN access is completely prohibited in the country having country code972.

Once the aforesaid information has been received by the controller 440of the mobile terminal 400 in step 460, the controller 440 processes thereceived information in step 462 by comparing the country code derivedfrom the received information with the reference data 449 in localmemory 448. If the outcome of the comparison in step 462 is a match withany record in the reference data 449, the controller 440 uses suchrecord in step 464 to determine whether the second wireless interface444 needs to be disabled, either fully (all frequency bands), or partly(some frequency band(s)). In the subsequent step 466, the controller 440effectuates the disablement of the second wireless interface, if deemednecessary in step 464.

Preferably, the reference data 449 is stored in non-volatile memory in amanner that prevents manipulation. In other words, the local memory 448may at least partly be implemented as for instance a PROM, EPROM,EEPROM, flash memory or magnetic disk.

The reference data may be stored already by the manufacturer or providerof the mobile terminal, prior to delivery to the end-customer (user401). For safety reasons, restrictions may apply as regards whether orin what manner such reference data 449 may be upgraded later.

As an alternative to NW_CC 409 a, the information used by the controller440 in steps 460-466 may relate to data that only indirectly indicatesthe country or geographic area in which the network 410 is installed.For instance, the information may be a network code (NWC) 409 b oroperator code (OPC) 409 c, that identifies the network and/or itsoperator. For instance, in GSM, each network operator is provided with a5-digit network code “xxxyy”, where “xxx” indicates the country and “yy”uniquely identifies the operator among the available operators in thatcountry. Thus, in this alternative, the first three digits “xxx” of the5-digit network code may replace the country code in the examples above.

In another embodiment, the information used by the controller 440 insteps 460-466 may be in the form of a WLAN disable command received overany available communication channel in the mobile telecommunicationsnetwork, such as a cellinformation channel or broadcast channel, orreceived as an electronic message such as SMS, MMS or email.

In some embodiment(s), the user 401 is given an alert in the userinterface 446 when the controller 440 has decided to disable the secondwireless interface 444 in step 464. Depending on implementation, such analert may be purely informative, or it may invite the user 401 toconfirm that the second wireless interface 444 is in fact to bedisabled.

Depending on implementation, the first and second wireless interfaces442, 444 may consist of two separate and complete chain of components,starting from a respective antenna and including respective hardware andsoftware components such as RF receiver/transmitter and network protocolstacks, or they may share certain components such as the antenna and theRF receiver/-transmitter, or parts thereof.

The invention has mainly been described above with reference to a fewexemplifying embodiments. However, as is readily appreciated by a personskilled in the art, other embodiments than the ones disclosed above areequally possible within the scope of the invention, as defined by theappended patent claims.

1. A method of controlling a mobile terminal having a first wirelessinterface for cellular communication in a mobile telecommunicationsnetwork and a second wireless interface for non-cellular wirelesscommunication in at least one frequency band, the method involving thesteps, in said mobile terminal, of: receiving information from saidmobile telecommunications network; processing said information; anddisabling, based on an outcome of said processing of said information,said second wireless interface from wireless communication in at leastone frequency band.
 2. A method as defined in claim 1, wherein said stepof receiving information involves receiving control information from anode in said mobile telecommunications network over said first wirelessinterface.
 3. A method as defined in claim 2, wherein said step ofdisabling is performed if said control information includes a disablingcommand.
 4. A method as defined in claim 2, wherein said steps ofprocessing and disabling are based on a country code, network code oroperator code associated with said mobile telecommunications network andderivable from the control information received from said node.
 5. Amethod as defined in claim 1, wherein said at least one frequency banddisabled in said step of disabling is a frequency band which isunlicensed in a first country or geographic area, but is reserved,prohibited or otherwise unavailable in a second country or geographicarea, wherein said step of disabling is performed if the informationreceived in said step of receiving indicates that said mobiletelecommunications network is associated with said second country orgeographic area.
 6. A method as defined in claim 5, wherein said step ofprocessing involves comparison between contents of said information andreference data stored in local memory of said mobile terminal, andwherein said step of disabling is performed if the outcome of saidprocessing is a match from said comparison, indicating that said mobiletelecommunications network is associated with said second country orgeographic area.
 7. A method as defined in claim 1, said second wirelessinterface being capable of wireless communication in at least a firstand a second frequency band, wherein said step of disabling involvesdisabling the second wireless interface from wireless communication insaid first frequency band but not in said second frequency band.
 8. Amethod as defined in claim 1, said second wireless interface beingcapable of wireless communication in at least a first and a secondfrequency band, wherein said step of disabling involves disabling thesecond wireless interface from wireless communication in said firstfrequency band as well as in said second frequency band.
 9. A method asdefined in claim 1, wherein said second wireless interface is aninterface adapted for connectionless packet data communication.
 10. Amethod as defined in claim 1, wherein said second wireless interface isa wireless local area network interface.
 11. A mobile terminal having afirst wireless interface for cellular communication in a mobiletelecommunications network, a second wireless interface for non-cellularcommunication, and a controller coupled to said first and secondwireless interfaces, wherein the controller is adapted to: receiveinformation from said mobile telecommunications network; process saidinformation; and disable, based on an outcome of said processing of saidinformation, said second wireless interface from wireless communicationin at least one frequency band.
 12. A mobile terminal as defined inclaim 11, wherein the controller is adapted to receive said informationover said first wireless interface as control information from a node insaid mobile telecommunications network.
 13. A mobile terminal as definedin claim 12, wherein the controller is adapted to disable said secondwireless interface if said control information includes a disablingcommand.
 14. A mobile terminal as defined in claim 12, wherein thecontroller is adapted to process said control information received fromsaid node by deriving at least one of a country code, network code oroperator code associated with said mobile telecommunications network.15. A mobile terminal as defined in claim 11, wherein the at least onefrequency band is a frequency band which is unlicensed in a firstcountry or geographic area, but is reserved, prohibited or otherwiseunavailable in a second country or geographic area, wherein thecontroller is adapted to disable said at least one frequency band, ifthe information received from said mobile telecommunications networkindicates that said mobile telecommunications network is associated withsaid second country or geographic area.
 16. A mobile terminal as definedin claim 15, wherein the controller is adapted to process theinformation received from said mobile telecommunications network bycomparing between contents of said information and reference data storedin local memory of said mobile terminal, and wherein the controller isadapted to disable said at least one frequency band, if the outcome ofsaid processing is a match from the comparison, indicating that saidmobile telecommunications network is associated with said second countryor geographic area.
 17. A mobile terminal as defined in claim 11, saidsecond wireless interface being capable of wireless communication in atleast a first and a second frequency band, wherein the controller isadapted to disable the second wireless interface from wirelesscommunication in said first frequency band but not in said secondfrequency band.
 18. A mobile terminal as defined in claim 11, saidsecond wireless interface being capable of wireless communication in atleast a first and a second frequency band, wherein the controller isadapted to disable the second wireless interface from wirelesscommunication in said first frequency band as well as in said secondfrequency band.
 19. A mobile terminal as defined in claim 11, whereinsaid second wireless interface is an interface adapted forconnectionless packet data communication.
 20. A mobile terminal asdefined in claim 11, wherein said second wireless interface is awireless local area network interface.
 21. A mobile terminal as definedin claim 11, said second wireless interface being capable of wirelesscommunication in at least a first and a second frequency band, saidmobile terminal further having local memory for storing reference data,wherein: said reference data defines a mapping between differentcountries, geographic areas or mobile telecommunications networks,represented by at least one of a country code, network code or operatorcode, and allowability or non-allowability of different frequency bandsfor non-cellular wireless communication; the controller is adapted toreceive said information over said first wireless interface as controlinformation from a node in said mobile telecommunications network; thecontroller is adapted to process said control information received fromsaid node by deriving at least one of a country code, network code oroperator code associated with said mobile telecommunications network,and comparing the derived country code, network code or operator code tosaid reference data to produce said outcome of said processing; and thecontroller is adapted to disable the second wireless interface fromwireless communication in said first frequency band, said secondfrequency band, none of said first and second frequency bands, or bothof said first and second frequency bands, depending on said outcome ofsaid processing.
 22. A mobile terminal as defined in claim 21, whereinsaid local memory comprises non-volatile memory in which said referencedata is stored in a manner that prevents manipulation.
 23. A mobileterminal as defined in claim 11, further having a user interface,wherein the controller is adapted to provide an alert in said userinterface, before disabling said second wireless interface.
 24. A mobileterminal as defined in claim 23, wherein the controller is furtheradapted, after having provided said alert in said user interface, toawait a confirmation from a user of the mobile terminal before disablingsaid second wireless interface.